Wind power hydrogen production simulation system and method

Abstract

This application relates to a wind power hydrogen production simulation system compatible with multiple types of electrolyzers. The device includes: a wind turbine simulation module for simulating AC power generation from a wind turbine; an AC / DC conversion module, the input of which is connected to the wind turbine simulation module; an output switching module, the input of which is connected to the output of the AC / DC conversion module; the output switching module has at least two output switching terminals, each used to connect to a different type of hydrogen production electrolyzer; and a controller connected to the control terminal of the output switching module, used to identify the type of electrolyzer used in the hydrogen production process and control the output switching module to switch the output to the appropriate electrolyzer type. This structure and method improve the compatibility of wind power hydrogen production simulation.

Description

Technical Field

[0001] This application relates to the field of renewable energy hydrogen production technology, and in particular to a wind power hydrogen production simulation system and method. Background Technology

[0002] With the rapid development of renewable energy and hydrogen energy coupling technologies, wind power hydrogen production has become an important way to achieve large-scale production of "green hydrogen". As an important direction for the integration of new energy and hydrogen energy industry, wind power hydrogen production technology has received widespread attention in this field.

[0003] Currently, the most common water electrolysis hydrogen production technologies are proton exchange membrane (PEM) electrolyzers and alkaline (ALK) electrolyzers. The two have significant differences in electrical characteristics: PEM electrolyzers require the neutral point on the DC input side to be ungrounded, while alkaline electrolyzers usually require the negative terminal to be grounded; the two also differ in dynamic response characteristics, control strategies, and rated voltage and current parameters. For example, alkaline electrolyzers have lower operating voltage and higher current, while PEM electrolyzers are the opposite.

[0004] Due to the aforementioned differences, wind power hydrogen production simulation devices are not compatible with alkaline electrolyzers and PEM electrolyzers in related technologies. Summary of the Invention

[0005] Therefore, it is necessary to provide a wind power hydrogen production simulation system that can improve the compatibility of wind power simulation devices in response to the above-mentioned technical problems.

[0006] In a first aspect, this application provides a wind power hydrogen production simulation system compatible with multiple types of electrolyzers, the device comprising:

[0007] The wind turbine simulation module is used to simulate the AC power generation of a wind turbine.

[0008] AC / DC conversion module, the input of which is connected to the wind turbine simulation module;

[0009] The output switching module has an input terminal connected to the output terminal of the AC / DC conversion module; the output switching module has at least two output switching terminals, each of which is used to connect to a different type of hydrogen electrolyzer.

[0010] The controller, connected to the control terminal of the output switching module, is used to identify the type of the hydrogen electrolyzer and control the output switching module to switch the output to the hydrogen electrolyzer that matches the type of the electrolyzer.

[0011] In one embodiment, the hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the output switching module includes:

[0012] The grounding state switching unit has a grounding terminal for grounding; the first input terminal of the grounding state switching unit is connected to the positive output terminal of the AC / DC conversion module, and the second input terminal of the grounding state switching unit is connected to the negative output terminal of the AC / DC conversion module.

[0013] The first output switching terminal of the grounding state switching unit is used to connect to the alkaline electrolytic cell, and the first output switching terminal of the grounding state switching unit is connected to the grounding terminal of the grounding state switching unit.

[0014] The second output switching terminal of the grounding state switching unit is used to connect to the PEM electrolytic cell;

[0015] The controller is used to control the grounding state switching unit to switch to the first output switching terminal to achieve negative grounding when the electrolytic cell type is identified as an alkaline electrolytic cell; the controller is used to control the grounding state switching unit to switch to the second output switching terminal when the electrolytic cell type is identified as a PEM electrolytic cell.

[0016] In one embodiment, the grounding state switching unit includes:

[0017] The first switching unit has its common terminal connected to the first output terminal of the AC / DC conversion module; the first throw terminal of the first switching unit is used to connect to the first input terminal of the PEM electrolyzer; and the second throw terminal of the first switching unit is used to connect to the first input terminal of the alkaline electrolyzer.

[0018] The second switching unit has its input terminal connected to the second output terminal of the AC / DC conversion module; its first throw terminal is used to connect to the second input terminal of the PEM electrolyzer; its second throw terminal is used to connect to the second input terminal of the alkaline electrolyzer, and is also used for grounding.

[0019] The controller is connected to the control terminal of the first switching unit and the control terminal of the second switching unit, respectively.

[0020] In one embodiment, the wind power hydrogen production simulation system further includes:

[0021] The transformer's input side is connected to the output of the wind turbine simulation module, and its output side is connected to the input of the AC / DC conversion module.

[0022] The transformer is used to convert the AC power of the wind turbine simulation module and input the converted AC power to the input terminal of the AC-DC conversion module.

[0023] In one embodiment, the controller is connected to the control terminal of the AC / DC conversion module;

[0024] The AC / DC conversion module is used to convert the electrical parameters of the simulated wind power generation into DC electrical parameters that are compatible with the hydrogen electrolyzer type, according to the control instructions of the controller. The control instructions are generated by the controller according to the type of electrolyzer.

[0025] In one embodiment, the controller is connected to the input of the AC / DC conversion module;

[0026] The controller is used to automatically identify the type of hydrogen electrolyzer by detecting the electrical signal at the input of the AC / DC conversion module.

[0027] Secondly, this application also provides a method for simulating hydrogen production from wind power, applied to the aforementioned simulation of hydrogen production from wind power, the method comprising:

[0028] Identify the type of electrolyzer used in hydrogen production;

[0029] The control output switching module switches the output to a hydrogen production electrolyzer that matches the type of electrolyzer.

[0030] In one embodiment, the hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the method includes:

[0031] When the electrolytic cell type is identified as an alkaline electrolytic cell, the control grounding state switching unit switches to the first output switching terminal of the grounding state switching unit to achieve negative electrode grounding;

[0032] When the electrolytic cell type is identified as a PEM electrolytic cell, the control grounding state switching unit switches to the output of the second output switching terminal of the grounding state switching unit.

[0033] In one embodiment, when the controller is connected to the control terminal of the AC / DC conversion module, the method includes:

[0034] The AC / DC conversion module controls the conversion to DC electrical parameters that are compatible with the type of hydrogen electrolyzer.

[0035] In one embodiment, when the controller is connected to the input of the AC / DC conversion module, it identifies the type of the hydrogen electrolyzer, including:

[0036] Detect the electrical signal at the input terminal of the AC / DC conversion module;

[0037] Based on electrical signals, the type of electrolyzer in the hydrogen production electrolyzer is automatically identified.

[0038] Thirdly, this application also provides a controller, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described method.

[0039] The aforementioned wind power hydrogen production simulation system and method, by setting up a wind turbine simulation module and an AC / DC conversion module, can simulate wind power hydrogen production. By setting up an output switching module and a controller, it can automatically identify and adapt to the electrical characteristics of different types of electrolyzers. That is, by identifying the type of electrolyzer for hydrogen production and controlling the output switching module to switch to the matching electrolyzer, a single wind power hydrogen production simulation system can support multiple types of electrolyzers. This structure and method improve the compatibility of wind power hydrogen production simulation, thereby increasing the versatility and utilization of the wind power hydrogen production simulation system, and further reducing the cost of building a test platform for large-scale wind power hydrogen production simulation. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This application provides a schematic diagram of the structure of a wind power hydrogen production simulation system compatible with multiple types of electrolyzers, as shown in the embodiments of this application.

[0042] Figure 2 This is a schematic diagram of the structure of an output switching module implementation provided in an embodiment of this application;

[0043] Figure 3 A schematic diagram of the specific structure of a grounding state switching unit provided in an embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the structure connecting a controller and an AC / DC conversion module according to an embodiment of this application;

[0045] Figure 5 A schematic flowchart illustrating a method for simulating hydrogen production from wind power, provided in an embodiment of this application;

[0046] Figure 6 This is a schematic diagram of the specific structure of a wind power hydrogen production simulation system compatible with multiple types of electrolyzers, provided in an embodiment of this application.

[0047] Figure label:

[0048] 110 Wind turbine simulation module; 120 AC / DC conversion module; 130 Output switching module; 140 Controller; 150 Transformer; 20 Hydrogen electrolyzer; 201 PEM electrolyzer; 202 Alkaline electrolyzer; 131 Grounding state switching unit; 131a First switching unit; 131b Second switching unit; 121 AC / DC conversion module. Detailed Implementation

[0049] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0051] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

[0052] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0053] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0054] With the rapid development of renewable energy and hydrogen energy coupling technologies, wind power hydrogen production has become an important way to achieve large-scale production of "green hydrogen". As an important direction for the integration of new energy and hydrogen energy industry, wind power hydrogen production technology has received widespread attention in this field.

[0055] Currently, the most common water electrolysis hydrogen production technologies are proton exchange membrane (PEM) electrolyzers and alkaline (ALK) electrolyzers. The two have significant differences in electrical characteristics: PEM electrolyzers require the neutral point on the DC input side to be ungrounded, while alkaline electrolyzers usually require the negative terminal to be grounded; the two also differ in dynamic response characteristics, control strategies, and rated voltage and current parameters. For example, alkaline electrolyzers have lower operating voltage and higher current, while PEM electrolyzers are the opposite.

[0056] Due to the aforementioned differences, most existing wind power hydrogen production devices are designed for a single type of electrolyzer. During the implementation of related technologies, it was found that the technologies lack adaptability to different electrical topologies and control modes. This leads to the need to configure dedicated simulation systems for different electrolyzers in practical applications, resulting in redundant equipment development, increased costs, and insufficient system flexibility.

[0057] Based on the above reasons, this application provides a wind power hydrogen production simulation system, which improves the compatibility of the wind power hydrogen production simulation system, thereby increasing its versatility and utilization, and further reducing the construction cost of a large-scale wind power hydrogen production simulation test platform.

[0058] In one exemplary embodiment, Figure 1 A schematic diagram of a wind power hydrogen production simulation system compatible with multiple types of electrolyzers provided in this application embodiment is shown below. Figure 1 As shown, the device includes a wind turbine simulation module 110, an AC / DC conversion module 120, an output switching module 130, and a controller 140, wherein:

[0059] The wind turbine simulation module 110 is used to simulate the AC power generation of a wind turbine.

[0060] Among them, the wind turbine simulation module 110 can refer to a power supply device that can generate unstable alternating current that simulates wind energy changes. It can be used to reproduce the output characteristics of a real wind turbine and provide an energy source for subsequent hydrogen production and electrolysis.

[0061] AC / DC conversion module 120, the input terminal of AC / DC conversion module 120 is connected to wind turbine simulation module 110.

[0062] The AC / DC conversion module 120 can refer to a power conversion device such as a rectifier or converter, which can be used to convert the AC power generated by the wind turbine simulation module 110 into DC power suitable for use in the electrolytic cell. For example, the AC / DC conversion module 120 can be an AC / DC module.

[0063] The output switching module 130 has an input terminal connected to the output terminal of the AC / DC conversion module 120. The output switching module 130 has at least two output switching terminals, and each output switching terminal of the output switching module 130 is used to connect to different types of hydrogen production electrolyzers 20.

[0064] The output switching module 130 can refer to a switching device with multiple output channels, which can distribute DC power to different output paths according to control signals to adapt to the access requirements of different types of electrolytic cells.

[0065] The controller 140 is connected to the control terminal of the output switching module 130 and is used to identify the type of the hydrogen electrolyzer 20 and control the output switching module 130 to switch the output to the hydrogen electrolyzer 20 that matches the type of the electrolyzer.

[0066] The controller 140 may refer to an intelligent control unit such as a microprocessor or programmable logic controller, which is used to monitor the system status, identify the load type, and issue corresponding control commands.

[0067] For example, the output of the wind turbine simulation module 110 can be connected to the input of the AC / DC conversion module 120 to transmit simulated wind power AC to the AC / DC conversion module 120. The output of the AC / DC conversion module 120 can be connected to the input of the output switching module 130 to transmit the converted DC to the switching module. Multiple outputs of the output switching module 130 can be connected to the power inputs of different types of electrolytic cells. The signal detection terminal of the controller 140 can be connected to the status detection points of each module; for example, the control output terminal can be connected to the control interfaces of the AC / DC conversion module 120 and the output switching module 130.

[0068] Specifically, through the coordinated operation of the output switching module 130 and the controller 140, a reconfigurable DC output network is constructed. While maintaining the unified architecture of wind turbine simulation and AC / DC conversion, the automatic switching between the negative grounding mode of the alkaline electrolyzer and the non-grounding mode of the PEM electrolyzer is realized. At the same time, it can support the dynamic matching of different voltage and current parameters, thereby overcoming the defects of single electrolyzer adaptation and poor compatibility.

[0069] In practical applications, the wind turbine simulation module 110 generates simulated alternating current (AC), which is then converted to direct current (DC) by the AC / DC conversion module 120. The controller 140 can identify the currently connected hydrogen electrolyzer 20 and its type using a preset identification mechanism. Based on the identification result, the controller 140 can send a control signal to the output switching module 130, causing it to switch to the corresponding output. The output switching module 130 can then switch the DC output to the hydrogen electrolyzer 20 that matches the identified electrolyzer type, based on the control signal. This allows for automatic adaptation to different types of electrolyzers, enabling rapid switching of electrolyzer types without manual intervention.

[0070] In this embodiment, the output switching module 130 enables the wind power hydrogen production simulation system to have multiple output modes, while the automatic identification and control function of the controller 140 can automatically identify and adapt to the electrical characteristics of different types of electrolyzers, so that a single simulation device can adapt to the needs of different types of electrolyzers, thereby improving the versatility and utilization of the wind power hydrogen production simulation system and reducing the construction cost of the wind power hydrogen production simulation test platform.

[0071] In one exemplary embodiment, Figure 2 This is a schematic diagram of the structure of an output switching module 130 provided in an embodiment of this application, as shown below. Figure 2 As shown, it is possible to Figure 1 Based on this, the specific structure of the wind power hydrogen production simulation system is further illustrated by example. The hydrogen production electrolyzer 20 includes an alkaline electrolyzer 202 and a PEM electrolyzer 201. The PEM electrolyzer 201 can refer to a water electrolysis hydrogen production device using a proton exchange membrane as the electrolyte. Its structure mainly includes a membrane electrode assembly (including a proton exchange membrane, an anode catalyst layer, and a cathode catalyst layer), a gas diffusion layer, and electrode plates. The alkaline electrolyzer 20 can refer to a water electrolysis hydrogen production device using potassium hydroxide or sodium hydroxide solution as the electrolyte. Its structure can include a cathode, an anode, a diaphragm, and electrode plates. The output switching module 130 can include a grounding state switching unit 131.

[0072] The grounding state switching unit 131 has a grounding terminal for grounding; the first input terminal of the grounding state switching unit 131 is connected to the positive output terminal of the AC-DC conversion module 120, and the second input terminal of the grounding state switching unit 131 is connected to the negative output terminal of the AC-DC conversion module 120.

[0073] Among them, the grounding state switching unit 131 can refer to a circuit switching device with grounding selection function, which can determine whether to connect the negative terminal of the DC output side to ground according to the type of electrolytic cell.

[0074] The two output switching terminals of the grounding state switching unit 131 are respectively used to connect to the hydrogen production electrolyzer 20, including the alkaline electrolyzer 202 and the PEM electrolyzer 201; the control terminal of the grounding state switching unit 131 is connected to the controller 140.

[0075] The two output switching terminals can refer to dedicated output interfaces adapted to alkaline electrolyzer 202 and PEM electrolyzer 201, respectively, and can have different electrical connection characteristics.

[0076] When the electrolytic cell type is identified as alkaline electrolytic cell 202, the controller 140 controls the grounding terminal of the grounding state switching unit 131 to be connected to the negative terminal of the AC / DC conversion module 120 to achieve negative grounding.

[0077] The controller 140 is used to disconnect the negative terminal of the AC / DC conversion module 120 from the grounding terminal of the grounding state switching unit 131 when the electrolytic cell type is identified as PEM electrolytic cell 201.

[0078] For example, the grounding state switching unit 131 may include a high-current relay group or a power switching device, and the output signal of the controller 140 may drive the on / off state changes of these switching elements. When connected to the alkaline electrolytic cell 202, the controller 140 may control the grounding state switching unit 131 to connect the DC negative terminal to the grounding terminal; when connected to the PEM electrolytic cell 201, the controller may control the grounding state switching unit 131 to disconnect this connection.

[0079] Specifically, the grounding state switching unit 131 can be implemented using a double-pole double-throw switch. One common terminal of the double-pole double-throw switch can be connected to the positive output terminal of the AC / DC conversion module 120, and the other common terminal can be connected to the negative output terminal of the AC / DC conversion module 120. One pair of throw terminals of the double-pole double-throw switch can be used to connect to the two input terminals of the alkaline electrolyzer 202, and the other pair of throw terminals can be used to connect to the two input terminals of the PEM electrolyzer 201.

[0080] The throw terminal of the negative input terminal of the alkaline electrolytic cell 202 can be connected to the ground terminal. Thus, the controller 140 can switch the grounding state and the output terminal by controlling the switching of the double-pole double-throw switch.

[0081] Optionally, the grounding state switching unit 131 can flexibly switch the grounding state according to the requirements of different types of electrolytic cells. For the alkaline electrolytic cell 202, negative grounding is achieved by controlling the grounding terminal of the grounding state switching unit 131 to be connected to the negative terminal of the AC / DC conversion module 120. For the PEM electrolytic cell 201, the requirement of no grounding is met by controlling the negative terminal of the AC / DC conversion module 120 to be disconnected from the grounding terminal of the grounding state switching unit 131.

[0082] In this embodiment, the flexible configuration of the grounding state switching unit 131 can meet the different requirements of different types of electrolyzers for grounding characteristics, ensuring the safe operation of the alkaline electrolyzer 202 and avoiding system problems that may be caused by incorrect grounding of the PEM electrolyzer 201, thereby improving the flexibility and applicability of the wind power hydrogen production simulation system.

[0083] In practical applications, such as Figure 2 As shown, the first output switching terminal of the grounding state switching unit 131 is used to connect to the alkaline electrolytic cell 202, and the first output switching terminal of the grounding state switching unit 131 is connected to the grounding terminal of the grounding state switching unit 131.

[0084] The first output switching terminal can refer to the output interface specifically designed for the alkaline electrolyzer 202, which can physically connect the negative electrode line to the grounding line internally.

[0085] The second output switching terminal of the grounding state switching unit 131 is used to connect to the PEM electrolytic cell 201.

[0086] The second output switching terminal refers to the output interface specifically designed for the PEM electrolyzer 201, which does not have any wiring connected to the grounding wire.

[0087] When the electrolytic cell type is identified as alkaline electrolytic cell 202, the controller 140 controls the grounding state switching unit 131 to switch to the first output switching terminal to achieve negative grounding; when the electrolytic cell type is identified as PEM electrolytic cell 201, the controller 140 controls the grounding state switching unit 131 to switch to the second output switching terminal.

[0088] Switching to the first output switching terminal refers to the dedicated output channel that guides DC power to the alkaline electrolytic cell 202.

[0089] For example, the grounding state switching unit 131 can be a dual-output automatic transfer switch, and the identification signal of the controller 140 can drive the switching motor or electromagnetic mechanism to select the corresponding output path. A permanent grounding connection point can be set on the first output path (first output switching terminal), while the second output path (second output switching terminal) can remain in a floating state.

[0090] Specifically, when the controller 140 detects that the hydrogen electrolyzer 20 is of the alkaline type, it can control the double-throw switch to switch to the first output switching terminal, and the negative terminal of the AC / DC conversion module 120 forms a grounding loop through the grounding terminal, satisfying the negative terminal grounding requirement of the alkaline electrolyzer. When the controller 140 detects that the hydrogen electrolyzer 20 is of the PEM type, it can control the double-throw switch to switch to the second output switching terminal, and the negative terminal of the AC / DC conversion module 120 is disconnected from the grounding terminal, avoiding the formation of a grounding loop. In this way, it can adapt to the neutral point ungrounded requirement of the PEM electrolyzer.

[0091] By using the physical connection design between the output terminal and the ground terminal, combined with the switching logic of the controller 140, it can be ensured that the grounding status of different electrolytic cells is strictly matched with the electrical topology, thus avoiding the risk of equipment damage or performance abnormalities caused by grounding errors.

[0092] Optionally, the grounding state switching unit 131 can be implemented using a double-pole double-throw switch. The two common terminals of the double-pole double-throw switch are connected to the positive and negative output terminals of the AC / DC conversion module 120, respectively. The first set of contacts is connected to the positive and negative input terminals of the alkaline electrolytic cell 202, with the negative input terminal connected to the grounding terminal. The second set of contacts is connected to the positive and negative input terminals of the PEM electrolytic cell 201. The controller 140 adapts to different types of electrolytic cells by controlling the switching of the double-pole double-throw switch.

[0093] The controller 140 can automatically control the grounding state switching unit 131 to switch accordingly based on the identified electrolyzer type, without manual intervention. This improves the adaptability and automation of the wind power hydrogen production simulation system and simplifies the operation process. Furthermore, simulating multiple electrolyzer types with a single device reduces equipment costs and improves resource utilization efficiency.

[0094] In this embodiment, the physical isolation of the dual output path design fundamentally avoids the possibility of misoperation in the grounding state, ensuring that different types of electrolytic cells can obtain a power supply method that meets their safety specifications, greatly improving the system's compatibility, reliability and safety.

[0095] In one exemplary embodiment, Figure 3 This is a schematic diagram of the specific structure of a grounding state switching unit 131 provided in an embodiment of this application, as shown below. Figure 3 As shown, it is possible to Figure 1 Based on this, the specific structure of the wind power hydrogen production simulation system is further illustrated by example, wherein the grounding state switching unit 131 includes:

[0096] The first switching unit 131a has its common terminal connected to the first output terminal of the AC / DC conversion module 120; the first throw terminal of the first switching unit 131a is used to connect to the first input terminal of the PEM electrolyzer 201; and the second throw terminal of the first switching unit 131a is used to connect to the first input terminal of the alkaline electrolyzer 202.

[0097] The second switching unit 131b has its input terminal connected to the second output terminal of the AC / DC conversion module 120; the first throw terminal of the second switching unit 131b is used to connect to the second input terminal of the PEM electrolytic cell 201; the second throw terminal of the second switching unit 131b is used to connect to the second input terminal of the alkaline electrolytic cell 202, and the second throw terminal of the second switching unit 131b is also used for grounding.

[0098] The controller 140 is connected to the control terminal of the first switch unit 131a and the control terminal of the second switch unit 131b, respectively.

[0099] The first switching unit 131a and the second switching unit 131b may refer to high-power electrical switching devices, such as contactors or high-power MOSFET modules, which can withstand the large current required for the operation of the electrolytic cell.

[0100] For example, the common terminal of the first switching unit 131a is connected to the positive output terminal of the AC / DC conversion module 120. The positive input path of the PEM electrolytic cell 201 or the alkaline electrolytic cell 202 can be switched by alternating the first and second throw terminals of the first switching unit 131a. The input terminal of the second switching unit 131b is connected to the negative output terminal of the AC / DC conversion module 120. When the first throw terminal of the second switching unit 131b is connected to the PEM electrolytic cell 201, it forms an independent circuit. When the second throw terminal of the second switching unit 131b is connected to the alkaline electrolytic cell 202, it forms a negative grounding circuit through the grounding terminal. The controller 140 can independently control the switching actions of the throw terminals of the two switching units to ensure synchronous switching of the positive and negative paths. For example, the first switching unit 131a can be a dual-channel relay, and the second switching unit 131b can be a relay with a grounding contact. The switching action of the two units can be triggered by a pulse signal sent by the controller 140.

[0101] Optionally, the first switching unit 131a can control the direction of the positive electrode line, while the second switching unit 131b simultaneously controls the negative electrode line and the grounding status. When the PEM electrolytic cell 201 needs to be connected, the controller 140 controls the first switching unit 131a to be connected to the first throw terminal (point A), and simultaneously controls the second switching unit 131b to be connected to the first throw terminal (point A); when the alkaline electrolytic cell 202 needs to be connected, the first switching unit 131a is controlled to be connected to the second throw terminal (point B), and the second switching unit 131b is connected to the corresponding grounding terminal (GND point), which is also the second throw terminal (point B) of the second switching unit 131b.

[0102] Specifically, the first switching unit 131a and the second switching unit 131b can each be implemented using a single-pole double-throw switch. The common terminal of the first switching unit 131a is connected to the positive output terminal of the AC / DC conversion module 120 via a wire. The common terminal of the second switching unit 131b is connected to the negative output terminal of the AC / DC conversion module 120 via a wire. The first throw terminals of the first switching unit 131a and the second switching unit 131b are respectively connected to the positive and negative input terminals of the PEM electrolyzer 201 via wires. The second throw terminals of the first switching unit 131a and the second switching unit 131b are respectively connected to the positive and negative input terminals of the alkaline electrolyzer 202 via wires. The second throw terminal of the second switching unit 131b is connected to the ground terminal via a wire. The controller 140 can be connected to the control terminals of the first switching unit 131a and the second switching unit 131b via signal lines to control the switching.

[0103] In practical applications, when it is necessary to connect to the alkaline electrolyzer 202, the controller 140 sends a control signal to switch the first switching unit 131a to the first throw terminal and the second switching unit 131b to the first throw terminal. At this time, the positive terminal of the AC / DC conversion module 120 is connected to the positive input terminal of the PEM electrolyzer 201 through the first switching unit 131a, and the negative terminal is connected to the negative input terminal of the PEM electrolyzer 201 and grounded through the second switching unit 131b.

[0104] When the alkaline electrolyzer 202 needs to be connected, the controller 140 sends a control signal to switch the first switching unit 131a to the second throw terminal and the second switching unit 131b to the first throw terminal. At this time, the positive and negative terminals of the AC / DC conversion module 120 are connected to the positive and negative input terminals of the alkaline electrolyzer 202 through the first switching unit 131a and the second switching unit 131b, respectively, and the negative terminal is disconnected from the ground terminal.

[0105] In this embodiment, the structure employs a distributed switching unit design, reducing the current carrying capacity of individual switches and improving system reliability and lifespan. Furthermore, simple switching allows for flexible connection of different types of electrolyzers without requiring equipment replacement or reconfiguration, thus enhancing the versatility and flexibility of the wind power hydrogen production simulation system and reducing the costs of repetitive development and configuration. The structure is also simple, easy to implement and control, improving system reliability and stability. In addition, software-controlled switching enables rapid automated switching, improving system response speed and ease of operation.

[0106] In one exemplary embodiment, such as Figure 3 As shown, the wind power hydrogen production simulation system also includes:

[0107] Transformer 150, the input side of transformer 150 is connected to the output terminal of wind turbine simulation module 110, and the output side of transformer 150 is connected to the input terminal of AC-DC conversion module 120;

[0108] Transformer 150 is used to convert the AC power of the wind turbine simulation module 110 and input the converted AC power to the input terminal of AC-DC conversion module 120.

[0109] Transformer 150 can refer to power equipment used to realize AC voltage level conversion, which can be a power frequency isolation transformer or an autotransformer, with voltage regulation and electrical isolation functions, and can be used to match the voltage level requirements between the wind turbine simulation module 110 and the AC-DC conversion module 120.

[0110] For example, the relatively high-voltage AC power output by the wind turbine simulation module 110 is stepped down by the transformer 150 and converted into relatively low-voltage AC power before being input into the AC-DC conversion module 120. The rated capacity of the transformer 150 is matched with the maximum output power of the wind turbine simulation module 110, and the primary and secondary windings are electrically isolated by star connection or delta connection.

[0111] In this embodiment, a transformer can be used to achieve voltage matching and electrical isolation between the wind turbine simulation module and the AC / DC conversion module. This protects the AC / DC conversion module from voltage fluctuations, reduces the risk of system grounding faults, and provides a compatible interface for AC / DC conversion modules of different voltage levels, thereby improving the system's safety and scalability.

[0112] In one exemplary embodiment, Figure 4 This is a schematic diagram of the connection between the controller 140 and the AC / DC conversion module 120 provided in an embodiment of this application. Figure 4 As shown, the controller 140 is connected to the control terminal of the AC / DC conversion module 120.

[0113] The AC / DC conversion module 120 is used to convert the electrical parameters of the simulated wind power generation into DC electrical parameters that are compatible with the hydrogen production electrolyzer 20 corresponding to the type of electrolyzer, according to the control instructions of the controller 140. The control instructions are generated by the controller according to the type of electrolyzer.

[0114] The control commands refer to digital control signals generated by the controller based on the type of hydrogen electrolyzer, including target voltage, current, switching frequency, and protection thresholds. These signals can be used to adjust the conduction of power devices in the AC / DC conversion module to match the electrical characteristics required by different types of electrolyzers, such as alkaline or PEM. The electrical parameters for wind power simulation refer to the AC power characteristic parameters output by the wind turbine simulation module, including voltage amplitude, frequency, active power, reactive power, and power fluctuation range, used to reproduce the power output characteristics of a real wind farm. DC parameters may include output voltage, current limits, ripple coefficient, and other electrical characteristics.

[0115] For example, the controller 140 can adjust the control command to the AC / DC conversion module 120 according to the identified electrolyzer type of the hydrogen production electrolyzer 20. After receiving the control command, the AC / DC conversion module 120 can convert the electrical parameters of the wind power simulation power generation into DC output parameters that are compatible with the hydrogen production electrolyzer 20 corresponding to the electrolyzer type, thereby realizing the DC input of the hydrogen production electrolyzer.

[0116] For example, for a PEM electrolyzer, the controller 140 can control the AC / DC conversion module 120 to output a higher voltage and a lower current DC power, and can set stricter ripple control requirements; for an alkaline electrolyzer, it controls the output of a lower voltage and a higher current DC power.

[0117] In this embodiment, by controlling the output parameters of the AC / DC conversion module 120 in a coordinated manner, the wind power hydrogen production simulation system can provide the optimal power supply characteristics for different types of electrolyzers, which not only meets the working requirements of each electrolyzer, but also avoids the equipment damage or inefficiency that may be caused by inappropriate electrical parameters.

[0118] In one exemplary embodiment, such as Figure 4 As shown, the controller 140 is connected to the input terminal of the AC / DC conversion module 120.

[0119] The controller 140 is used to automatically identify the type of the hydrogen electrolyzer 20 by detecting the electrical signal at the input terminal of the AC / DC conversion module 120.

[0120] The electrical signal may include electrical characteristic parameters such as the input impedance characteristics, capacitance effect, and initial polarization voltage.

[0121] For example, the controller 140 can apply a detection signal after the electrolytic cell is connected and identify the type of electrolytic cell by analyzing the feedback electrical response characteristics. For instance, a PEM electrolytic cell and an alkaline electrolytic cell can be distinguished by measuring the inter-electrode capacitance, and whether grounding is required can be determined by detecting the initial polarization characteristics.

[0122] Optionally, the AC signal connected to the input terminal of the AC / DC conversion module 120 can include electrolyzer load characteristic information. When the hydrogen production electrolyzer 20 is connected to the system, its electrical characteristics can be fed back to the controller 140 through the input terminal of the AC / DC conversion module 120. The controller 140 can collect the current ripple coefficient and voltage fluctuation range at the input terminal in real time through current and voltage sensors. For example, an alkaline electrolyzer exhibits a current fluctuation greater than ±5% and a voltage fluctuation less than ±2% at the input terminal, while a proton exchange membrane electrolyzer exhibits a voltage fluctuation greater than ±3% and a current fluctuation less than ±1%. The controller 140 can compare the collected data with preset thresholds and, combined with the difference in the slope of the dynamic response curve, determine the type of electrolyzer currently connected. After identification, the controller 140 can simultaneously trigger the channel selection of the output switching module 130 and the parameter adjustment of the AC / DC conversion module 120 to achieve fully automatic adaptation.

[0123] In this embodiment, the automatic electrical feature identification technology enables plug-and-play identification of the electrolyzer type, eliminating the hassle of manual settings and greatly improving the ease of use and automation. This enhances the intelligence level and operational convenience of the wind power hydrogen production simulation system, and strengthens its compatibility and flexibility with various electrolyzers.

[0124] In one exemplary embodiment, Figure 5 This application provides a schematic flowchart of a method for a wind power hydrogen production simulation system, applicable to the aforementioned wind power hydrogen production simulation system. Figure 5 As shown, the method includes:

[0125] S501. Identify the type of electrolyzer used in hydrogen production.

[0126] S502, The control output switching module switches the output to a hydrogen production electrolyzer that matches the type of electrolyzer.

[0127] Among them, identifying the type of electrolytic cell can refer to detecting and determining the type of electrolytic cell currently connected and its required electrical configuration.

[0128] For example, the identification process may include steps such as sending a detection signal, collecting response data, comparing it with a feature database, and obtaining an identification result. The switching control may include operations such as sending a switching command, verifying the switching result, and confirming the connection status.

[0129] Optionally, when the controller detects that the electrolyzer is alkaline through the input electrical signal, the output switching module connects the negative output terminal of the AC / DC converter to the ground terminal, forming a negative grounding loop. Simultaneously, it adjusts the rectification parameters of the AC / DC converter to match the low-voltage, high-current requirements of the alkaline electrolyzer. If a PEM electrolyzer is detected, the controller disconnects the negative grounding loop, switches to an ungrounded output path, and adjusts the AC / DC converter to a high-voltage, low-current output mode.

[0130] Automatic mode identification can be achieved by comparing electrical signal characteristics with preset parameter thresholds. Combined with dynamic parameter adjustment and grounding state switching, a single wind power simulated hydrogen production device can be compatible with the differentiated electrical requirements of two types of electrolyzers.

[0131] The output switching module automatically switches to the output terminal that matches the identified electrolytic cell type based on control commands, achieving compatibility with different types of electrolytic cells. Specifically, the output switching module may include components such as relays or solid-state switches, which switch their conduction states after receiving control signals, thereby changing the topology of the output circuit.

[0132] In this embodiment, a standardized identification and control process ensures that different types of electrolytic cells can obtain the correct power supply configuration, reducing the risk of errors in manual operation and improving the repeatability and reliability of the testing process.

[0133] In an exemplary embodiment, when the hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the output switching module includes a grounding state switching unit, the method includes:

[0134] When the electrolytic cell type is identified as an alkaline electrolytic cell, the grounding terminal of the control grounding state switching unit is connected to the negative terminal of the AC / DC conversion module to achieve negative grounding;

[0135] When the electrolytic cell type is identified as a PEM electrolytic cell, the negative terminal of the AC / DC conversion module is disconnected from the grounding terminal of the grounding state switching unit.

[0136] For example, for an alkaline electrolyzer, the method may include steps such as closing the grounding relay, verifying the grounding resistance value, and confirming good grounding. For a PEM electrolyzer, it is necessary to ensure that all grounding connections are completely disconnected and to verify the inter-electrode insulation performance.

[0137] In practical applications, when the hydrogen production electrolyzer is detected to be an alkaline electrolyzer, the controller sends a closing command to the grounding state switching unit, forming a conductive circuit between the negative output terminal of the AC / DC conversion module and the grounding terminal. At this time, the negative terminal of the electrolyzer can be forcibly grounded through the grounding state switching unit. When the hydrogen production electrolyzer is detected to be a PEM electrolyzer, the controller sends a disconnect command, cutting off the connection between the negative terminal of the AC / DC conversion module and the grounding terminal. At this time, the input circuit of the electrolyzer remains in a floating potential state. The grounding state switching is achieved by controlling a double-throw relay. The common contact of this relay is connected to the negative terminal of the AC / DC conversion module, the normally closed contact is connected to the grounding terminal, and the normally open contact remains open, thus forming a selective grounding path.

[0138] In this embodiment, a differentiated grounding control strategy is adopted to meet the safe operation requirements of the alkaline electrolyzer while ensuring the insulation integrity of the PEM electrolyzer, thus providing the optimal operating environment for both types of electrolyzers.

[0139] Specifically, when the electrolytic cell type is identified as an alkaline electrolytic cell, the grounding state switching unit is switched to the first output switching terminal of the grounding state switching unit to achieve negative grounding;

[0140] When the electrolytic cell type is identified as a PEM electrolytic cell, the control grounding state switching unit switches to the output of the second output switching terminal of the grounding state switching unit.

[0141] For example, when the electrolytic cell type is identified as an alkaline electrolytic cell, the control signal drives the common terminal of the first switching unit to be connected to the first throw terminal, and at the same time, the input terminal of the second switching unit is connected to the first throw terminal, so that the negative output terminal of the AC / DC conversion module is grounded through the first throw terminal of the second switching unit, forming a negative grounded power supply circuit for the alkaline electrolytic cell; when the proton exchange membrane electrolytic cell type is identified, the control signal switches the first switching unit to be connected to the second throw terminal, and the second switching unit switches to be connected to the second throw terminal. At this time, the positive and negative output terminals of the AC / DC conversion module and the electrolytic cell form an ungrounded circuit, which meets the electrical isolation requirements of the proton exchange membrane electrolytic cell.

[0142] In this embodiment, by switching physical paths, complete isolation between the two output modes is ensured, mutual interference of electrical characteristics is avoided, and all types of electrolytic cells can operate in the designed electrical environment.

[0143] In an exemplary embodiment, when the controller is connected to the control terminal of the AC / DC conversion module, the method includes:

[0144] The AC / DC conversion module controls the conversion to DC electrical parameters that are compatible with the type of hydrogen electrolyzer.

[0145] For example, parameter adjustment may include operations such as setting the output voltage range, adjusting the current limit, configuring filter parameters, and optimizing dynamic response characteristics. Each parameter needs to be finely configured according to the specific type of electrolytic cell.

[0146] In this embodiment, by coordinating the adjustment of power parameters, optimal power supply conditions are provided for each type of electrolyzer, maximizing the working performance of each electrolyzer, improving hydrogen production efficiency and equipment lifespan.

[0147] In one exemplary embodiment, when the controller is connected to the input of the AC / DC conversion module, it identifies the type of the hydrogen electrolyzer, including:

[0148] Detect the electrical signal at the input terminal of the AC / DC conversion module;

[0149] Based on electrical signals, the type of electrolyzer in the hydrogen production electrolyzer is automatically identified.

[0150] For example, when the input terminal of the AC / DC conversion module is connected to an alkaline electrolyzer, the controller can identify that the current ripple coefficient is greater than a preset threshold by real-time acquisition of the input voltage waveform of the AC / DC conversion module, thus determining that the current connection is an alkaline electrolyzer. When the input terminal is switched to a proton exchange membrane electrolyzer, the controller can detect that the input voltage harmonic distortion rate is lower than a preset threshold, thus determining that the current connection is an alkaline electrolyzer.

[0151] In this embodiment, an automatic identification of the type of electrolytic cell can be achieved through a non-invasive electrical feature detection method, without the need for additional detection equipment or manual intervention, which greatly simplifies the operation process and improves the intelligence level of the system.

[0152] In one exemplary embodiment, Figure 6 A schematic diagram of a wind power hydrogen production simulation system compatible with multiple types of electrolyzers, provided in this application embodiment, is shown below. Figure 6 As shown, it is possible to Figure 1 Based on this, a detailed structural description of the wind power hydrogen production simulation system is provided, using two types of hydrogen production electrolyzers, PEM electrolyzers and alkaline electrolyzers, as examples. The wind power hydrogen production simulation system and its method include:

[0153] Wind turbine simulation module 110: used to connect to the AC power output from the wind turbine generator.

[0154] AC-DC conversion module 121: also known as AC-DC conversion module 120, which can be used to convert AC power into DC power suitable for the electrolytic cell.

[0155] Output switching module 130: Used to control the grounding status of the negative terminal of the DC output, which is achieved by controlling the switching contactor.

[0156] Controller 140: can be used to control the on / off state of the contactor according to the type of electrolytic cell, and accept scheduling from the upper controller 140 to automatically adjust the corresponding output voltage and current parameters as needed for the type of electrolytic cell to be driven; at the same time, it can monitor fault information to ensure the stable operation of the simulator.

[0157] The wind power hydrogen production simulation system can achieve compatibility between PEM and alkaline electrolyzer mainly through the control of controller 140.

[0158] The output switching module 130 is equipped with two switching contactors (first switching unit 131a and second switching unit 131b), and the switching direction of the switching contactors can be controlled by the controller 140. When the contactor is switched to point A, the negative terminal of the DC output is not grounded and is used to supply power to the PEM electrolyzer; when the contactor is switched to point B, the negative terminal of the DC output is grounded and is used to supply power to the alkaline electrolyzer.

[0159] The controller 140 can have multiple built-in control strategies that can be automatically switched according to the type of electrolytic cell. When the equipment is in PEM electrolytic cell mode, it can control the AC-DC conversion module 121 to output voltage and current values ​​adapted to the electrical characteristics of the PEM electrolytic cell; when the equipment is in alkaline electrolytic cell mode, it can control the AC-DC conversion module 121 to output voltage and current values ​​adapted to the electrical characteristics of the alkaline electrolytic cell.

[0160] For example, a switching contactor can be provided on the DC output side. The controller 140 controls whether the negative terminal of the DC input part of the two electrolyzers is grounded through the switching contactor, thereby realizing a wind power hydrogen production simulation system compatible with electrolyzers with two different electrical characteristics, PEM and alkaline.

[0161] The controller 140 can identify the type of electrolyzer and automatically switch to the corresponding control strategy and algorithm. The wind power hydrogen production simulation system can use the controller 140 to adjust the output voltage and output current characteristics, outputting voltage and current with corresponding electrical characteristics for different electrolyzers.

[0162] For example, the three-phase AC power from the simulated wind turbine is converted by a transformer and connected to the input of the wind power-to-hydrogen simulation system. Its internal controller 140 controls the output DC voltage, current, and the switching mode of the contactors, directly supplying power to the electrolyzers. Two contactors are added to the output DC voltage to control whether the negative terminal of the DC input section of the two types of electrolyzers is grounded, thus enabling a wind power-to-hydrogen simulation system to be compatible with both PEM and alkaline electrolyzers with different electrical characteristics.

[0163] When the simulator is in PEM electrolytic cell mode, the contactor is switched to point A, the negative terminal of the DC output is not grounded, simulating the floating state of the neutral point; at the same time, the controller 140 switches to the PEM electrolytic cell control strategy.

[0164] When the simulator is in alkaline electrolysis cell mode, the contactor switches to point B, grounding the negative terminal of the DC output, thus meeting the operational requirements of the alkaline electrolysis cell. Simultaneously, controller 140 switches to the alkaline electrolysis cell control strategy.

[0165] In this embodiment, a wind power hydrogen production simulation system can be implemented that is compatible with both PEM and alkaline electrolyzer hydrogen production. Compared to configuring different simulators for the two types of electrolyzers, this application is structurally simpler and reduces hardware redundancy. This application is easy to operate; mode switching is achieved by a contactor, and users can set it through the interface without manually adjusting the wiring, improving efficiency and safety. The DC voltage and current output characteristics of this application can be freely switched, and the output characteristics are adjustable.

[0166] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0167] In one exemplary embodiment, a controller is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0168] Identify the type of electrolyzer used in hydrogen production;

[0169] The control output switching module switches the output to a hydrogen production electrolyzer that matches the type of electrolyzer.

[0170] In one exemplary embodiment, the hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the processor, when executing the computer program, further performs the following steps:

[0171] When the electrolytic cell type is identified as an alkaline electrolytic cell, the grounding terminal of the control grounding state switching unit is connected to the negative terminal of the AC / DC conversion module to achieve negative grounding;

[0172] When the electrolytic cell type is identified as a PEM electrolytic cell, the negative terminal of the AC / DC conversion module is disconnected from the grounding terminal of the grounding state switching unit.

[0173] In one exemplary embodiment, the processor further performs the following steps when executing the computer program:

[0174] When the electrolytic cell type is identified as an alkaline electrolytic cell, the control grounding state switching unit switches to the first output switching terminal of the grounding state switching unit to achieve negative electrode grounding;

[0175] When the electrolytic cell type is identified as a PEM electrolytic cell, the control grounding state switching unit switches to the output of the second output switching terminal of the grounding state switching unit.

[0176] In an exemplary embodiment, when the controller is connected to the control terminal of the AC / DC conversion module, the processor, when executing the computer program, further performs the following steps:

[0177] The AC / DC conversion module controls the conversion to DC electrical parameters that are compatible with the type of hydrogen electrolyzer.

[0178] In an exemplary embodiment, when the controller is connected to the input of the AC / DC conversion module, the processor, when executing the computer program, further performs the following steps:

[0179] Detect the electrical signal at the input terminal of the AC / DC conversion module;

[0180] Based on electrical signals, the type of electrolyzer in the hydrogen production electrolyzer is automatically identified.

[0181] In one exemplary embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0182] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0183] In the description of this specification, references to terms such as "in practical application," "specific embodiment," and "optionally" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0184] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0185] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wind power hydrogen production simulation system, characterized in that, The wind power hydrogen production simulation system includes: The wind turbine simulation module is used to simulate the AC power generation of a wind turbine. An AC / DC conversion module, the input of which is connected to the wind turbine simulation module; An output switching module is provided, wherein the input terminal of the output switching module is connected to the output terminal of the AC / DC conversion module; the output switching module has at least two output switching terminals, and each output switching terminal of the output switching module is used to connect to different types of hydrogen production electrolyzers. The controller, connected to the control terminal of the output switching module, is used to identify the type of the hydrogen production electrolyzer and control the output switching module to switch the output to the hydrogen production electrolyzer that matches the type of the electrolyzer. The electrical characteristics of the hydrogen electrolyzer connected to the system are fed back to the controller through the input terminal of the AC / DC conversion module. The controller compares the electrical signal collected by the input terminal of the AC / DC conversion module with a preset threshold and identifies the type of electrolyzer connected by combining the slope difference of the dynamic response curve. After the controller completes the identification, it synchronously triggers the channel selection of the output switching module and the parameter adjustment of the AC / DC conversion module to achieve automatic adaptation to the type of electrolyzer.

2. The wind power hydrogen production simulation system according to claim 1, characterized in that, The hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the output switching module includes: A grounding state switching unit has a grounding terminal for grounding; the first input terminal of the grounding state switching unit is connected to the positive output terminal of the AC / DC conversion module, and the second input terminal of the grounding state switching unit is connected to the negative output terminal of the AC / DC conversion module. The first output switching terminal of the grounding state switching unit is used to connect to the alkaline electrolytic cell, and the first output switching terminal of the grounding state switching unit is connected to the grounding terminal of the grounding state switching unit; the second output switching terminal of the grounding state switching unit is used to connect to the PEM electrolytic cell. The controller is used to control the grounding state switching unit to switch to the first output switching terminal to achieve negative grounding when the electrolytic cell type is identified as an alkaline electrolytic cell; the controller is used to control the grounding state switching unit to switch to the second output switching terminal to achieve negative grounding when the electrolytic cell type is identified as a PEM electrolytic cell.

3. The wind power hydrogen production simulation system according to claim 2, characterized in that, The grounding state switching unit includes: A first switching unit, the common terminal of which is connected to the first output terminal of the AC / DC conversion module; a first throw terminal of the first switching unit is used to connect to the first input terminal of the PEM electrolyzer; a second throw terminal of the first switching unit is used to connect to the first input terminal of the alkaline electrolyzer. The second switching unit has its input terminal connected to the second output terminal of the AC / DC conversion module; its first throw terminal is used to connect to the second input terminal of the PEM electrolytic cell; its second throw terminal is used to connect to the second input terminal of the alkaline electrolytic cell, and its second throw terminal is also used for grounding. The controller is connected to the control terminal of the first switch unit and the control terminal of the second switch unit, respectively.

4. The wind power hydrogen production simulation system according to claim 1, characterized in that, The wind power hydrogen production simulation system also includes: A transformer, the input side of which is connected to the output terminal of the wind turbine simulation module, and the output side of which is connected to the input terminal of the AC / DC conversion module; The transformer is used to transform the AC power of the wind turbine simulation module and input the transformed AC power to the input terminal of the AC-DC conversion module.

5. The wind power hydrogen production simulation system according to claim 1, characterized in that, The controller is connected to the control terminal of the AC / DC conversion module; The AC / DC conversion module is used to convert the electrical parameters of the simulated wind power generation into DC electrical parameters that are compatible with the hydrogen production electrolyzer corresponding to the type of electrolyzer, according to the control instructions of the controller. The control instructions are generated by the controller according to the type of electrolyzer.

6. The wind power hydrogen production simulation system according to claim 1, characterized in that, The controller is connected to the input terminal of the AC / DC conversion module; The controller is used to automatically identify the type of hydrogen electrolyzer by detecting the electrical signal at the input terminal of the AC / DC conversion module.

7. A method for simulating hydrogen production from wind power, characterized in that, Applied to the wind power hydrogen production simulation system as described in any one of claims 1-6, the method comprises: Identify the type of electrolyzer used in hydrogen production; The output switching module is controlled to switch the output to a hydrogen production electrolyzer that matches the type of electrolyzer.

8. The method according to claim 7, characterized in that, When the hydrogen production electrolyzer includes an alkaline electrolyzer and a PEM electrolyzer, and the output switching module includes a grounding state switching unit, the method includes: When the electrolytic cell type is identified as an alkaline electrolytic cell, the grounding state switching unit is controlled to switch to the first output switching terminal of the grounding state switching unit to achieve negative electrode grounding; When the electrolytic cell type is identified as a PEM electrolytic cell, the grounding state switching unit is controlled to switch to the output of the second output switching terminal of the grounding state switching unit.

9. The method according to claim 7, characterized in that, When the controller is connected to the control terminal of the AC / DC conversion module, the method includes: The AC / DC conversion module is controlled to convert the DC electrical parameters to those compatible with the hydrogen electrolyzer of the electrolyzer type.

10. The method according to claim 7, characterized in that, When the controller is connected to the input terminal of the AC / DC conversion module, the identification of the electrolyzer type of the hydrogen production electrolyzer includes: Detect the electrical signal at the input terminal of the AC / DC conversion module; Based on the electrical signal, the type of electrolyzer for hydrogen production is automatically identified.

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